FSA3157P6X

Overview

The FSA3157P6X is a single-pole/double-throw (SPDT) analog switch fabricated using advanced sub-micron CMOS technology. It operates within a supply voltage range of 1.65 V to 5.5 V and features a maximum on-resistance of 7 Ohms. The device supports a maximum power dissipation of 180 mW with a maximum supply current of 1 uA. Switching performance includes a maximum propagation delay of 5.2 ns and a maximum transition time of 3.5 ns. It functions reliably across an ambient temperature range from -40°C to +85°C and is housed in a compact SC-70-6 surface-mount package.

Feature Summary

• Break-before-make select circuitry prevents signal disruption on the B port during switching transitions.
• Control input tolerates voltages up to 7.0V, providing overvoltage protection independent of the VCC operating range.
• Rail-to-rail signal handling capability ensures effective operation for both analog and digital applications.

Applications

• 2:1 Multiplexer/Demultiplexer bus switching
• Portable consumer electronics requiring low voltage operation
• Signal routing in mobile handsets and media tablets

Procurement Notes

Verify component authenticity through authorized distribution channels or direct manufacturer engagement. Confirm RoHS compliance status and check for specific environmental certifications required by the target market. Review datasheet revisions to ensure alignment with current manufacturing specifications before finalizing procurement orders.

Selection Notes

Select this component when space-constrained designs require a single-channel SPDT switch with ultra-high speed performance. The wide control input tolerance simplifies interface logic levels, while the low on-resistance minimizes signal attenuation. Ensure the application voltage remains within the specified 1.65 V to 5.5 V range for optimal electrical characteristics.

Part Context

This part belongs to the TinyLogic family of low-voltage analog switches. It serves as a successor to earlier Fairchild Semiconductor designs following the corporate merger. The device maintains compatibility with standard SC-70 packaging while offering enhanced switching speeds compared to legacy counterparts in the same form factor.

Replacement Considerations

The NC7SB3157P6X is a functionally equivalent alternative within the same product family. Verify pinout compatibility and confirm that the substitute meets the specific on-resistance and switching speed requirements of the original design.

FAQ

What is the purpose of the break-before-make circuitry?

It prevents temporary disruption of signals on the B port by ensuring that both switches are not enabled simultaneously during select pin switching.

How does the control input voltage tolerance benefit system design?

The control input tolerates voltages up to 7.0V, allowing it to interface with higher voltage logic levels regardless of the lower VCC operating range.

Is the FSA3157P6X suitable for high-frequency signal routing?

Yes, it offers a 250 MHz bandwidth and fast switching times, making it suitable for high-speed data transmission applications.